Matrix for line-casting machines.



F. D. LEA.

MATRIX FOR LINE CASTING MACHINES.

APPLICATION FILED SEPT. 4. 1917- Patented Aug. 13, 1918.

flank D. Lea y 31:7 .Afzorneys TRAN K D. LEA, DE LOS ANGELES, CALIFORNIA, ASSIGNOR 0F GEE-HALF 'IO FRANCIS M. BUCK, OF LOS ANGELES, CALIFORNIA.

MATRIX FOB. LINE-CASTING- MACHINES. I

Specification of Letters Patent.

Patented Au 13, refs.

Application filed September 4., 1917. Serial No. 189,534.

To all whom it may concern;

Be it known that I, FRANK D.'LEA, residing at Los Angeles, in the county of Los Angeles and State of California, have 1nvented new and useful Improvements 1n Matrices for Line- Casting Machines, of which the following is a specification.

This invention relates to line casting machines and pertains particularly to matrices therefor.

In casting type bars, the quad matrix forms a" mold surface for the type, WhlCll surface is less than type high, but not lower than the base of the characters. When a line is not completely filled with characters, 71. e.,

' there are onl a few characters at one end,

the slug sur ace of the line, as cast, is so high that it will print a black streak. This is due to the relatively high slug surface, which is inked due to the softness of the inking roll which contacts with the surface and ing of the same, thereby delivering from the line casting machine a finished product which does not require cutting. A further object is to provide a quad matrix which will pass through line casting machines without material alteration of the machines.

I accomplish these objects by means of the embodiment of my invention illustrated in theacconipanying drawing, in which Figure 1, is a fragmentary section throu h the mold disk,and first elevator, showing t- 1e matrices in position for casting. Fig. 2, is a fragmentary front elevation of a mold disk. Fig.3, is a front and side elevation of my improved matrix. Fig. 4, is a section as seen on the line 4r-4 of Fig. 3.

Referring more particularly to Fig. 1, the

' mold disk is indicated by A, the vice by-B,

the first elevator by C, and the matrix by D. The metal pot, not shown, is moved to force the fluid metal through slot 5 and against the matrices. As the matrices and the mold disk are the cooperating parts ma terial to the invention, these will be described more in detail.

The slot 5 is formed in a mold 6 which is preferably removably secured to the mold disk 7. This mold has shoulders 8 and 9 which correspond to shoulders 10 and 11 on the matrices.

The shoulder 11 on my improved matrix has a-movable lug 12 overlapping the same forming in effect the usual rear lug. This lug extends above the shoulder 9, so that as the mold and matrix are pressed together the lug 12 will be forced inwardly. The lug 12, as will be noted from Fig. 3, is formed on the end of a finger, which is slidably mounted in the matrix so that itsfmold end may be projected. Forcing of the lug l2 inwardly projects the finger and lowers the top of the slug space in the type bar which is cast.

In order for the matrix to pass through the machine, the finger 13 should, not project, that is, should be no higher than the surface of the matrix. The finger is therefore arranged to be normally retracted.

This is accomplished by means of a spring.

Finger 13 is in the form of an arc of a ring, and has a channel 14 formed in its peripheral surface. A tongue 15 formed on a washer 16 is secured to the matrix by a screw 17 Tongue 15 projects into the channel 14 and acts as a key to maintain the finger in place. Abutting the tongue and one end of the channel is a compression spring 18. It is obvious that spring 18 tends to retract finger 13 and project lug and does so when there is no pressure on lug 12. The result is that the matrix is normally maintained of such outline or she e that it is free to pass through the mac ine without encountering obstacles. The mold end of the finger is only projected at the time that it'will be of service.

The exact shape of the finger and the means for retracting the same shown herein finger construction being movable into and out of said mold and having an actuating part disposed at a rear lug, and means on said mold cooperating with said finger construction to project the latter.

2. The combination of a mold, a matrix cooperating therewith, said matrix comprising a projectable finger construction, said finger construction being movable intoand out of said mold and having an actuating part disposed at a rear lug, resilient means tending to retract said finger, and means on said mold cooperating with said finger construction to pro ect the latter,

15 3. A matrix comprising a projectable finger construction, said finger construction being movable into and out of a mold and having an actuating part-disposed at a rear 4. A matrix comprisin a projectable finger construction, said nger construction being movable into and out of a mold, said finger construction having an actuating part disposed at a rear lug, and resilient means tending to retract said finger.

In witness that I claim the foregoing, I

hereunto subscribe my name, this 27th dayof August, 1917.

FRANK 1).. LEA. 

